The practice or art of making or using garlands; garlands collectively or as a craft.
From garland plus -ry (suffix forming nouns meaning the practice or art of something), similar to 'archery' (the practice of archery) or 'pottery' (the practice of making pottery).
The -ry suffix turns simple nouns into whole fields of practice—'garlandry' suggests garland-making as a skilled craft, like the florists and decorators of ancient Rome.
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